kash·ruth noun orkash·rut\käˈshrüt(h), ˈ ̷ ̷ˌ ̷ ̷\; alsokash·rus\ˈkäshrəs, -ru̇s\ (-s) Etymology:kashruth, kashrut from Hebrew kashrūth, kashrūt, literally, fitness, from kāshēr kosher, fit, proper; kashrus from Yiddish, from Hebrew kashrūth 1.: the state of being kosher according to Jewish religious law < rabbinical approval of the kashruth of the new scroll of the Torah > 2.: the Jewish dietary laws < meals for Orthodox Jews who observe kashruth > — compare hechsher